The QXE421 Quattro Value Switcher is a high-resolution computer & video scaler seamless switcher with a convient compact design. Designed specifically for large screen projections it is ideal for your next high-resolution A/V presentation! This seamless switcher features 4 universal inputs including 1 DVI, and 3 outputs - 1 analog, 1 DVI for the main and 1 analog for the preview. With the true scaled preview output, the Quattro Value switcher displays any video or computer source on an LCD screen before displaying it on the main output. Creating the A/V presentation you're envisioning has never been easier! This user-friendly switcher features many attributes to assit you in creating your A/V presentation including: high-resolution PIP in computer & video formats, fade and titling, high-resolution logo insertion and frames stored, and is compatible with any native resolution of the latest HD display devices! Also offering high-quality digital decoder, improved 3:2 and 2:2 pull down circuitry, auto-adaptative pixel-by-pixel 3D motion compensation, time base corrector, frame rate converter & follower, this versatile switcher provides the high-quality images you desire for your next A/V presentation. Suitable for Large Screen Projections; 4 Universal A/V Inputs Including 1 DVI; 2 Outputs for Main & 1 for Preview; 1 Stereo Audio Line for Each A/V Input; True Scale Preview Out; High-resolution PIP; Auto Setup Function; Auto Clock & Phase for Computers; Dual RS-232 Com Port; Allows to Set Input Image Controls; D: 10.4” x W 19” x H 1.74”.